MALICIOUS
134
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a PDF containing embedded JavaScript, which is a common technique for executing malicious code. It also contains numerous external URIs, many of which are hosted on disposable domains, suggesting a link farm or phishing operation. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to malicious websites for further exploitation.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://krisoc.ru/uplcv?utm_term=ford+fiesta+manual+vs+automatic PDF link annotation
- http://shuimotongyuan.com/userfiles/file/vetubemesomofaguserufimul.pdfIn PDF document text
- https://xn--bankkrtya-41a.hu/js/ckfinder/userfiles/files/tatukobosenazel.pdfIn PDF document text
- http://quangphong.vn/uploads/image/files/bafenubabufaxokuwuladil.pdfIn PDF document text
- http://www.roosprommenschenckelfoundation.nl/ckfinder/files/files/49195498790.pdfIn PDF document text
- http://papienbanana.com/user_file/file/87242303202.pdfIn PDF document text
- http://bishnutoursandtravels.in/userfiles/file/181993653.pdfIn PDF document text
- http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/16156f0bb94c1e---gikebutafomewetudodiwoxok.pdfIn PDF document text
- http://ducthanggroup.com/webroot/img/files/20413559665.pdfIn PDF document text
- http://kiemdinhcan.com/Images_upload/files/83549077691.pdfIn PDF document text
- https://denimder.org/resimler/files/tosojikugagopugodadijufo.pdfIn PDF document text
- https://dollarplus98.com/images/upload/files/fowegozepedoxujibotibabas.pdfIn PDF document text
- https://fanaf.org/article_ressources/file/18674954762.pdfIn PDF document text
- http://bayanairag.com/uploads/userfiles/files/kuxizirozuwizonuroramo.pdfIn PDF document text
- http://erfaspot.com/resimler/files/45108527791.pdfIn PDF document text
- https://soroptimist.be/oldsite/intranet/ckeditor/ckfinder/userfiles/images/files/dojujasiroxosel.pdfIn PDF document text
- http://kimwendelldesign.com/ckfinder/userfiles/files/33747116919.pdfIn PDF document text
- http://techbico.vn/uploads/image/files/59989379760.pdfIn PDF document text
- https://ewastexperts.com/userfiles/files/nuxulusoz.pdfIn PDF document text
- http://dyccpharma.com/upload/files/gopowilikuxamiruwu.pdfIn PDF document text
- http://hawaii-resort.info/images/blog/file/fovukalerozibogoforobono.pdfIn PDF document text
- https://mar3ol.com/Files/files/molik.pdfIn PDF document text
- http://vzwsportenmuziek.com/content_docs/33751887291.pdfIn PDF document text
- http://desushibar.com/userfiles/file/lafubaxadelodefupakabara.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ae1c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAE1C | 10780 bytes |
SHA-256: 91571b5e225bb2d2524e8d0475b8b6b887964563e34b6513671720e2e98f6302 |
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font_01_sfnt_off0000c6ea.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC6EA | 16120 bytes |
SHA-256: 4ab1b2215d7357cc07ca59dac81450435baaf622acd0d4b57a4e5fa3e84ecf73 |
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font_02_sfnt_off0000f02e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF02E | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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